饲料研究2026，Vol.49Issue(13)：40-45,6.DOI:10.13557/j.cnki.issn1002-2813.2026.13.007
色氨酸对热应激文昌鸡生长性能、血清生化及抗氧化指标的影响
Effects of tryptophan on growth performance,serum biochemical,and antioxidant indices of heat-stressed Wenchang chickens
摘要
Abstract
The experiment aimed to investigate the effects of different levels of tryptophan on the growth performance,organ indices,serum biochemistry,immunity,and antioxidant indices of heat-stressed Wenchang chickens.A total of 480 healthy 81-day-old female Wenchang chickens with the same genetic background and similar body weight were randomly divided into five groups with six replicates per group and 16 chickens per replicate.The control group(group 1)was fed a basal diet,while the groups 2 to 5 were fed the basal diet supplemented with 0.09%,0.18%,0.27%,and 0.36%tryptophan,respectively.The pre-test period was 10 days,and the formal test period was 40 days.The results showed that compared with the group 1,the final weight and average daily gain in the group 3 were significantly increased(P＜0.05),and the feed-to-gain ratio in the groups 3 and 4 was significantly decreased(P＜0.05).The dressing percentage in the group 3 and the leg muscle percentage in the groups 2,4 and 5 were significantly increased(P＜0.05).The liver index in the groups 2 and 3,and the spleen index in the group 2 were significantly increased(P＜0.05).The serum total protein(TP)and glucose(GLU)concentrations in the groups 3 and 5,as well as the albumin(ALB)content in the groups 2,3 and 5 were significantly increased(P＜0.05),the uric acid(UA)content in group 3 was significantly decreased(P＜0.05).The serum immunoglobulin A(IgA)content in groups 3 to 5,the immunoglobulin G(IgG)content in the groups 4 and 5,and the immunoglobulin M(IgM)content in the groups 2 to 5 were significantly increased(P＜0.05).The serum superoxide dismutase(SOD)activity and total antioxidant capacity(T-AOC)in the group 3 were significantly increased(P＜0.05),and the malondialdehyde(MDA)content in the groups 2 to 4 was significantly decreased(P＜0.05).The study shows that adding tryptophan supplementation can effectively improve the growth performance,metabolism,immune function,and antioxidant function of heat-stressed Wenchang chickens,and the recommended tryptophan supplementation level is 0.18%.关键词
色氨酸/热应激/文昌鸡/生长性能/血清生化指标/免疫指标Key words
tryptophan/heat-stress/Wenchang chickens/growth performance/serum biochemical indices/immune indices分类
农业科技引用本文复制引用
曹文斌,魏立民,刘杰,丁向彬,赵杉,凌卫东,刘圈炜..色氨酸对热应激文昌鸡生长性能、血清生化及抗氧化指标的影响[J].饲料研究,2026,49(13):40-45,6.基金项目
海南省科技人才创新项目(项目编号:KJRC2023C41、KJRC2023D05) （项目编号:KJRC2023C41、KJRC2023D05）
海南省现代农业产业技术体系建设专项(项目编号:HNARS-06-G03、HNARS-06-SX、HNARS-06-G01) （项目编号:HNARS-06-G03、HNARS-06-SX、HNARS-06-G01）
定安县科技计划项目(项目编号:202411007) （项目编号:202411007）
海南省农业科学院2025年院本级科研项目(项目编号:HAAS2025ZDGZ16) （项目编号:HAAS2025ZDGZ16）
